EP2494270A1 - Led-lampe mit kühlkörper - Google Patents
Led-lampe mit kühlkörperInfo
- Publication number
- EP2494270A1 EP2494270A1 EP10771039A EP10771039A EP2494270A1 EP 2494270 A1 EP2494270 A1 EP 2494270A1 EP 10771039 A EP10771039 A EP 10771039A EP 10771039 A EP10771039 A EP 10771039A EP 2494270 A1 EP2494270 A1 EP 2494270A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- channels
- led lamp
- axis
- ring structure
- heat sink
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000001816 cooling Methods 0.000 title claims abstract description 13
- 229910052736 halogen Inorganic materials 0.000 claims description 10
- 150000002367 halogens Chemical class 0.000 claims description 10
- 239000011521 glass Substances 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims 1
- 230000017525 heat dissipation Effects 0.000 description 29
- 230000000694 effects Effects 0.000 description 19
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 12
- 229910052782 aluminium Inorganic materials 0.000 description 12
- 238000005253 cladding Methods 0.000 description 6
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000004512 die casting Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 230000008058 pain sensation Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 230000006378 damage Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
- F21V29/50—Cooling arrangements
- F21V29/70—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks
- F21V29/83—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks the elements having apertures, ducts or channels, e.g. heat radiation holes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
- F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
- F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
- F21K9/20—Light sources comprising attachment means
- F21K9/23—Retrofit light sources for lighting devices with a single fitting for each light source, e.g. for substitution of incandescent lamps with bayonet or threaded fittings
- F21K9/232—Retrofit light sources for lighting devices with a single fitting for each light source, e.g. for substitution of incandescent lamps with bayonet or threaded fittings specially adapted for generating an essentially omnidirectional light distribution, e.g. with a glass bulb
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
- F21V29/50—Cooling arrangements
- F21V29/70—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks
- F21V29/74—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades
- F21V29/77—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades with essentially identical diverging planar fins or blades, e.g. with fan-like or star-like cross-section
- F21V29/773—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades with essentially identical diverging planar fins or blades, e.g. with fan-like or star-like cross-section the planes containing the fins or blades having the direction of the light emitting axis
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2115/00—Light-generating elements of semiconductor light sources
- F21Y2115/10—Light-emitting diodes [LED]
Definitions
- the invention relates to an LED lamp (LED: light-emitting diode), which comprises a luminous means with at least one LED and a heat sink.
- LED light-emitting diode
- an LED lamp is provided according to claim 1, which comprises a luminous means with at least one LED, a supply circuit and a (thus in thermal contact) heat sink.
- the heat sink is designed such that a plurality of channels for removing air, which is heated by an operation of the lighting means, are formed by it.
- the channels are arranged in a ring around an axis.
- the length of at least one channel is at least half of the shortest diagonal or transversal in the transverse extent of the corresponding one channel.
- the length is at least half of the shortest diagonal or transversal in the transverse extent of the corresponding channel.
- an LED lamp is provided according to claim 3, which comprises a lighting means with at least one LED, a supply circuit and a (thus in thermal contact) heat sink.
- the heat sink is designed such that a plurality of channels for removing air, which is heated by an operation of the lighting means, are formed by it.
- the channels are arranged in a ring around an axis.
- the entirety of the channels has a transverse extension transverse to the axis and a longitudinal extent along the axis which is at least as great as half the transverse extent.
- the heat sink is designed such that the channels form a first ring structure and a second ring structure, wherein the second ring structure surrounds the first ring structure with respect to the axis.
- the area of both the heat sink itself and the channels through which air flows is increased, and consequently the heat dissipation is improved.
- an LED lamp which comprises a luminous means with at least one LED, a supply circuit and a (thus in thermal contact) heat sink.
- the heat sink is designed such that a plurality of channels for removing air, which is heated by an operation of the lighting means, are formed by it.
- the channels are annularly disposed about an axis such that the channels form a first ring structure and a second ring structure, the second ring structure surrounding the first ring structure with respect to the axis.
- each of the channels has a cross section with a closed circumference. If possible, the channels should not have a closed circumference over their entire length, although it is also possible for them to have a closed circumference over their entire length. In this way, the heat dissipation by the corresponding air flow or convection is still improved because of the chimney effect, which adjusts due to the closed circumference.
- an LED lamp which comprises a luminous means with at least one LED, a supply circuit and a (thus in thermal contact) heat sink.
- the heat sink is designed such that a plurality of channels for removing air, which is heated by an operation of the lighting means, are formed by it.
- the channels are annularly disposed about an axis such that the channels form a first ring structure and a second ring structure.
- Each of the channels of the first ring structure has a cross section with a closed perimeter, and each of the channels of the second ring structure is circumferentially separated from each other with respect to the axis only by fin wall parts that extend at least substantially in radial directions.
- the advantage of the chimney effect can be exploited by means of the closed channels, while at the same time, with a small weight of the heat sink, can be removed via corresponding cooling fins additional heat.
- the ring structures depending on the arrangement, for each other serve as an air guide part, by the by the first Ring structure flowing air is selectively directed into the second ring structure, or vice versa.
- the second ring structure and the first ring structure at least partially overlap in the longitudinal direction of the axis.
- the channels upstream in the direction of air flow serve on the one hand as air guide parts for improved air flow, while at the same time the surface for increased heat dissipation is increased in the overlapping region.
- each of the channels has a rotationally symmetrical, preferably cylindrical, particularly preferably circular cylindrical cross section. This is a space-saving arrangement of the channels at the same time sufficient contact area for
- the axis is preferably equal to the rotational symmetry. Longitudinal axis of the LED lamp.
- the first and / or second ring structure each have at least two ring structures.
- each of the channels has a longitudinal axis oriented in its orientation on the axis, whereby the air convection through the chimney effect can proceed unhindered.
- the Longitudinal axes of the individual channels but advantageously not parallel to each other.
- the channels with respect to the axis in the circumferential direction are separated from one another only by rib wall parts which extend at least substantially in radial directions. In this way, a heat dissipation takes place with low weight of the heat sink.
- the heat sink further comprises a cladding part which is arranged such that it surrounds the channels or at least one ring structure with respect to the axis from the outside, wherein the cladding part has a cylindrical or conical outer surface, which is preferably designed rotationally symmetrical to the axis ,
- the wrapping part particularly advantageously surrounds the entirety of the channels or at least one ring structure in the longitudinal direction of the axis completely or only partially, preferably at least half of the longitudinal extent.
- the wrapping part is designed such that - in the longitudinal direction of the axis - the entirety of the channels or at least one ring structure projects beyond in one direction or in both directions.
- the air flows that form in the channels, merged again before leaving the heat sink or formed by splitting only after entry of the air into the interior of the heat sink.
- the wrapping part has a preferably circular-cylindrical or conical inner surface which is arranged directly adjacent to the radial end regions of the rib wall parts, so that an outer boundary is formed by the wrapping part for at least part of the channels. In this way, a closed cross-section of the channels is achieved so as to achieve a chimney effect safely to ensure a high heat dissipation.
- the heat sink is integrally formed. This allows a particularly effective heat conduction within the heat sink.
- the piece may consist of aluminum and be formed for example as a solid diecasting.
- the heat sink is made of plastic. This is advantageous in terms of the permissible surface temperature because it is higher for the plastic than for aluminum. This is due to the fact that the feeling of pain in, for example, a
- Plastic is generally not suitable for temperatures as high as aluminum, in the outer region of the heat sink considered here, correspondingly lower temperatures can be expected.
- an outer surface of the heat sink can generally be made lighter and better in appearance and aesthetics than an outer surface made of aluminum.
- each of the channels has a cross-section with a diameter of at least 4 mm, preferably at least 8 mm, in particular preferably from 5 to 12 mm.
- each of the channels preferably at least 10 mm in the longitudinal direction of the axis.
- the first ring structure with respect to the longitudinal direction of the axis are arranged offset to the second ring structure. In this way, the channels or ribs arranged downstream in the direction of flow also serve as an air guide for the subsequent channels, whereby a targeted, strong air flow for safe and high heat dissipation is provided.
- the LED lamp further comprises a driver housing for receiving a driver for operating the LED, wherein the driver housing has a surface region which forms an inner boundary of at least a portion of the channels. This allows a particularly good removal of heat that arises during operation of the lamp by the driver.
- the driver housing is connected to the surface of the heat sink.
- the LED lamp is particularly advantageously substantially in the form of a conventional incandescent or halogen lamp.
- it preferably has: a light bulb or halogen lamp base for mechanical and electrical connection with a corresponding conventional version, and a transparent cover, which is modeled on a glass bulb of the conventional light bulb or halogen lamp.
- the LED lamp can be used everywhere instead of a conventional light bulb or halogen lamp, without making technical changes to the lights.
- the appearance remains the same as a conventional lamp.
- Fig. 1 is a cross-sectional sketch of a first
- Heat sink according to the invention an LED lamp with channels with cylindrical
- FIG. 2A-C side views of the in Fig. 1st
- Fig. 3 is a cross-sectional sketch to a second
- FIG. 3rd are side views of the in Fig. 3rd
- FIGS. 6A-C are side views of those in FIG. 5
- Fig. 7 is a cross-sectional sketch of a fourth
- Fig. 8 is a cross-sectional sketch of a fifth
- Heat sink according to the invention an LED lamp with a plurality of ring structures of
- LED lamp with a heat sink according to a sixth embodiment.
- FIG. 10 shows a side view of an LED lamp L according to the invention.
- the LED lamp L has a heat sink K6 according to the invention according to a
- the LED lamp L may be formed to be suitable for replacing a conventional bulb or halogen lamp. It can therefore according to their external appearance substantially in the form of a conventional light bulb or halogen lamp and / or with a corresponding thread 40, or E27 or E14 thread, or plug (not shown) to be equipped or the mechanical and electrical connection with a corresponding conventional version is used. Such a lamp is therefore often referred to as a "retrofit LED lamp”.
- a supply circuit (“driver circuit") T is supplied with voltage which, starting from, for example, a supplied AC voltage (for example mains voltage) or DC voltage, the LED (s) of the lamp in a suitable manner
- a supply circuit for example, a supplied AC voltage (for example mains voltage) or DC voltage
- Such supply circuits are well known in the art and therefore will not be discussed in detail here, but all supply circuits have in common that they produce more or less waste heat protected in a driver housing G be arranged (see, for example, Fig. 1).
- the LED lamp L can accordingly have a transparent cover 42, which is modeled on a glass bulb of the conventional light bulb or halogen lamp.
- the LED lamp has a luminous means which comprises at least one LED (not shown).
- the LED lamp emits white light.
- heat is generated by the LED and also by the driver circuit T. This heat must be removed as effectively as possible in order to enable safe and effective operation of the LED lamp L and the longest possible life of the LED.
- Figure 1 shows a heat sink Kl according to the first embodiment. This is formed by a plurality of channels 1, which are arranged annularly about an axis A and thus preferably form a ring structure Rl. Particularly preferably, the axis A corresponds to the rotational symmetry axis or longitudinal axis LL of the LED lamp L (see FIG. 10).
- the heat sink Kl is further formed in one piece.
- the piece may consist of aluminum and be formed for example as a solid diecasting.
- the heat sink Kl consists of plastic. This is advantageous in terms of the permissible surface temperature because it is higher for the plastic than for aluminum. This is due to the fact that the sensation of pain, for example, at a surface temperature of 70 degrees Celsius in plastic is much lower than at 70 degrees hot aluminum.
- plastic is generally not suitable for temperatures as high as aluminum, but especially in the outer region of the heat sink Kl can be expected with correspondingly lower temperatures. Besides, lets In general, an outer surface of the heat sink Kl is made lighter and better visually and aesthetically than an outer surface made of aluminum.
- the channels 1 of the heat sink Kl preferably have a cross section with a closed circumference.
- each of the channels 1 further preferably has a rotationally symmetrical, preferably cylindrical, particularly preferably a circular cylindrical cross-section, in order to achieve a fluidically optimal shape as possible with as little turbulence as possible. This also ensures a space-saving arrangement of the channels 1 with comparatively low weight and at the same time sufficient contact surface for heat transfer.
- the channels may be shaped differently within a structure.
- the channels can thus have more than one cross-sectional shape.
- the channels may further have varying diameters in their overall length, ie along their longitudinal axis.
- channels at the top can be wider than at the bottom of the heat sink.
- the channels 1 are used for the removal of air by means of convection, which is heated by an operation of the LED lamp L, ie in particular by the light source or the LED and / or the driver T.
- the channels 1 are accordingly designed such that when operating the LED lamp L by the resulting heat a Air flow through the respective channels 1 can form. Therefore, the channels 1 are preferably designed such that they can cause a chimney effect for this air flow in this sense.
- the channels 1 preferably have a closed-section cross-section and further have a front opening 2 and a rear opening 3 so that air can flow in and out of the channels 1.
- the entirety of the channels 1 has, transverse to the axis A, a transverse extension and along the axis A a longitudinal extent. In order to achieve a particularly effective Konvetationsstrom and a particularly effective chimney effect, this is the longitudinal extent at least as large as half the transverse extent. Such a dimensioning improves the flow of air through the channels 1, in particular due to the chimney effect that occurs, so that a particularly effective heat dissipation is made possible.
- each of the channels 1 has a cross section with a diameter of at least 4 mm, particularly preferably between 6 and 12 mm, in order to achieve an optimal chimney effect.
- the heat sink Kl between 3 and 30 channels 1, on the one hand to provide a large surface area due to numerous channels 1 for heat dissipation, and on the other hand, the channels 1 according to the above dimensions to dimension to effect the chimney effect safely.
- the invention is not limited to a specific number of channels 1.
- the driver T is arranged.
- the Driver housing G on a surface area 0, which forms a largely planar inner boundary of the ring structure Rl of the channels 1.
- the surface area 0 can be advantageously cylindrical in terms of flow, in particular circular-cylindrical.
- a part of the driver housing G directly adjoins the channels 1, so that a direct or direct heat transfer from the driver housing G to the channels 1 is made possible.
- the driver T or its housing G is preferably arranged centrally to the axis A in order to achieve a particularly effective and uniform heat dissipation over the largest possible contact surface.
- the channels 1 are preferably oriented such that their longitudinal axis LK is oriented parallel to the axis A, so as to be as compact as possible around the driver T to the LED lamp L to lie and thus to form the largest possible surface contact for heat dissipation.
- the channels 1 are all aligned in this way, the air convection can also proceed unhindered with the aid of the chimney effect.
- FIGS. 2A to 2C show various examples of the configuration of the ring structure R 1 of the heat sink K 1.
- the heat sink K 1 can have a cylindrical shape (FIG. 2A) or else a shape that tapers towards one end in the longitudinal direction of the axis.
- the latter offers, in addition to an optical approach to the structure of conventional light bulbs, the further advantage that due to the tapered inlet more air can penetrate into the channels 1, which, together with the chimney effect, leads to improved heat dissipation.
- FIG. 3 shows a second exemplary embodiment of the LED lamp according to the invention. This corresponds essentially to the LED lamp according to the first Embodiment. Unless otherwise stated, therefore, the statements on the first embodiment apply analogously to the second embodiment. The reference characters are used accordingly.
- the heat sink K2 of the LED lamp according to the second embodiment further comprises a cladding part 10 as compared with that of the first embodiment. This is arranged so that it surrounds the channels 1 and the ring structure Rl of the channels 1 with respect to the axis A from the outside.
- the wrapping part 10 preferably has a cylindrical or conical outer surface, which is furthermore preferably designed to be rotationally symmetrical with respect to the axis A.
- the wrapping part 10 can surround the entirety of the channels 1 or the ring structure R1 in the longitudinal direction of the axis A completely or only partially, preferably at least half of the longitudinal extent.
- the heat dissipation therefore also takes place via the enveloping part 10 in a consequently increased form. Furthermore, the wavy outer structure of the ring structure Rl, in particular in channels 1 with a circular cross-section, covered and thus the appearance of the heat sink K2 can be improved.
- the covering part 10 can be designed such that it projects beyond the entirety of the channels 1 or the ring structure R 1 in one direction or in both directions-in the longitudinal direction of the axis.
- the air currents that form in the channels 1, merged again before leaving the heat sink K2 or only after entry of air into the interior of the heat sink K2 formed by splitting, creating a uniform and safe air flow is ensured.
- the air flow is aligned at an early stage according to the channels 1, which is thus specifically directed into this and ensures effective heat dissipation.
- the wrapping part 10 is preferably formed integrally with the heat sink K2.
- the areas of the heat sink K2 made of aluminum facing the driver T and the regions facing away from the driver T, such as the cladding part 10, made of plastic in order to allow the best possible heat conduction to avoid injuries due to the lower pain sensation Plastic compared to aluminum and to ensure the widest possible aesthetic and creative possibilities of the exterior design of the heat sink K2.
- FIGS. 5 and 6A to 6C show a further exemplary embodiment of a heat sink K3 according to the invention for an LED lamp. This corresponds essentially to the LED lamp according to the aforementioned embodiments. Unless otherwise stated, the statements on the preceding exemplary embodiments therefore also apply analogously to the third exemplary embodiment. The reference numerals are used accordingly.
- FIG. 5 shows a heat sink K3 with channels 1 which, with respect to the axis A, are separated from one another in the circumferential direction only by rib wall parts 20 which extend at least substantially in radial directions.
- the channels 1 preferably have a closed circumference in cross-section, which further preferably by an additional enclosure part 10 'to the channels 1 and the ring structure Rl 'is formed around.
- the wrapping part 10 'can then have a preferably circular-cylindrical or conical inner surface which is arranged directly adjacent to the radial end regions of the rib wall parts 20, so that an outer boundary for at least a part of the channels 1' is formed by the wrapping part 10 '(cf.
- FIGS. 6A-6C also FIGS. 6A-6C.
- the wrapping part 10 ' can also be formed integrally with the heat sink K3.
- a heat sink K3 which, for example, directly in one piece with the housing of the LED lamp or the driver housing G may be formed.
- the external appearance, in particular of a retrofit LED lamp is not impaired by a heat sink K3 formed in this way. Rather, this can be easily formed directly in the production and requires no further components for optical adjustment.
- Figure 7 shows a fourth embodiment of the heat sink K4 according to the invention, which substantially corresponds to that of the second embodiment
- Figures 8 and 9A to 9F show a fifth embodiment of the heat sink K5 according to the invention, which substantially corresponds to that of the third embodiment.
- the statements on all the preceding exemplary embodiments therefore also apply analogously to the fourth and fifth exemplary embodiments.
- the reference numerals are used accordingly.
- the channels 1, 1 - in analogy to the aforementioned first ring structure Rl, Rl 'form a second ring structure R2, R2', which in turn is arranged annularly around the axis A.
- the first ring structure Rl, Rl 'and / or the second ring structure R2, R2' each have at least one further, that is at least two ring structures. According to the shown
- Embodiments surround the second ring structure R2, R2 'with respect to the axis A, the first ring structure Rl, Rl'.
- the formation of two ring structures or two "chimneys" enables the formation of a particularly effective air flow for the removal of the heat produced during operation of the LED lamp, because, on the one hand, the surface serving for heat removal is replaced by the surrounding ring structures R 1, R 1 ',
- a larger volume of air to be flowed through is also available in the cooling body K, K5, so that heat can be removed even more effectively and efficiently.
- the size of the heat sink K4, K5 increases only minimally compared to a heat sink with only one ring structure Rl, Rl '.
- the surrounding ring structures R 1, R 1 'R 2, R 2' also only partially overlap, ie surround, or can be arranged offset from one another such that they are seen in the longitudinal direction of the axis A and in particular in the flow direction of the channels 1, 1 '- are arranged one behind the other, so no longer overlap in a cross-sectional area of the LED lamp.
- the ring structures Rl, Rl ', R2, R2' may be arranged in such a way to one another that through the flow direction vorgelagerte ring structure of the air flow is directed directly and selectively to the downstream ring structure, and thus a more efficient air flow with improved heat dissipation is provided.
- each of the channels l y of the first ring structure Rl ⁇ ⁇ has a closed-end cross section, and each of the channels l , the second ring structure R 2 'is referenced the axis A, in the circumferential direction only by the fin wall parts 20, ⁇ separated from each other, which extend at least substantially in radial directions.
- the weight of the heat sink K6 can be reduced, while at the same time a particularly effective heat dissipation can be ensured due to the chimney effect with respect.
- the channels in the first and the second ring structure may have different lengths. Even the channels within a ring structure may have different lengths.
- the channels Due to the fact that now so the channels can have different lengths and can also have different diameters D, results for the totality of the channels a varying length and a varying diameter.
- the totality of the channels has a certain width, which is the shortest diameter of the totality of the channels.
- the ensemble Due to the varying length, the ensemble also has a certain diagonal and / or transverse which represents the shortest diagonal and / or transversal of the totality of the channels.
- each individual channel has a certain width, which represents the shortest diameter of the channel. Due to the varying length, the channel also has a certain diagonal and / or transversal that represents the shortest diagonal and / or transversal of the channel.
- a corresponding enclosure part may be provided.
- This can either only between the first ring structure Rl, Rl ', R ⁇ ⁇ and the second ring structure R2, R2', R2 x be arranged (see. Also FIG. 7), that the first ring structure Rl, Rl 'with reference to the Axis surrounded from the outside, or only the second ring structure R2, R2 'with respect to the axis A surrounded from the outside, or both ring structures Rl, Rl', R2, R2 'with respect to the axis A respectively surrounded from the outside.
- the channels 1, 1 ' as shown in Figures 7 and 8, each having the same shape.
- the channels 1, 1 'of the respective ring structures R1, R1', R2, R2 ' are not bound to a specific shape, not even one another, so that, for example, the first ring structure R1, R1' has channels with a circular cross section, while the channels of the second ring structure R2, R2 'or any other ring structure have a different shape.
- the channels within a ring structure Rl, Rl ', R2, R2' may differ from each other.
- rib structure and closed structure can alternate in the circumferential direction of the ring structure Rl, Rl ', R2, R2'.
- the invention is not limited to one and two ring structures. Rather, as many as you like Ring structures surround each other and / or offset from each other and / or be arranged partially overlapping.
- the ring structures in particular in the case of rotationally symmetrical channels, are arranged in an ideally offset relationship to one another. In this way, a compact structure can be achieved by means of which, even with numerous channels, the outer shape of the heat sink can be almost maintained, while at the same time takes place due to high contact area and a high number of channels, a particularly good heat dissipation.
- the respective ring structures R1, R1 ', R2, R2' and / or their cladding part 10, 10 ' can be advantageous in terms of flow - to the front and / or to the rear with respect to the other ring structures R1, R1', R2, R2 'and / or or covering parts 10, 10 'project beyond.
- the wrapping part 10, 10 ' which surrounds the second ring structure R2, R2', extends further to the rear than the first ring structure Rl, Rl 'or its wrapping part 10, 10', the "partial air flow" is determined by the first Ring structure Rl, Rl 'and the "partial air flow” through the second ring structure R2, R2' brought together before the merged from these two partial air flows out air from the heat sink. If, for example, the covering part 10, 10 'of the first ring structure Rl, Rl' does not extend as far forward as that of the second ring structure R2, R2 ', the air flowing into the cooling body is divided into the two mentioned partial air flows only within the heat sink ,
- the invention is not limited to the aforementioned embodiments. Also any combination of ring structures, channels, envelope parts and rib wall parts and their shape and arrangement to each other are included in the scope of the claims of this invention.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Optics & Photonics (AREA)
- Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102009051334.5A DE102009051334B4 (de) | 2009-10-30 | 2009-10-30 | LED-Lampe mit Kühlkörper |
PCT/EP2010/064046 WO2011051058A1 (de) | 2009-10-30 | 2010-09-23 | Led-lampe mit kühlkörper |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2494270A1 true EP2494270A1 (de) | 2012-09-05 |
EP2494270B1 EP2494270B1 (de) | 2019-04-24 |
Family
ID=43216930
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP10771039.4A Not-in-force EP2494270B1 (de) | 2009-10-30 | 2010-09-23 | Led-lampe mit kühlkörper |
Country Status (6)
Country | Link |
---|---|
US (1) | US9163820B2 (de) |
EP (1) | EP2494270B1 (de) |
CN (1) | CN102639935A (de) |
DE (1) | DE102009051334B4 (de) |
TW (1) | TWI567327B (de) |
WO (1) | WO2011051058A1 (de) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102011004022B4 (de) * | 2011-02-14 | 2015-12-24 | Osram Gmbh | Leuchtvorrichtung |
DE102011053493A1 (de) * | 2011-04-05 | 2012-10-11 | Jb-Lighting Lichtanlagentechnik Gmbh | Scheinwerfer mit Leuchtdioden |
RU167546U1 (ru) * | 2016-03-10 | 2017-01-10 | Закрытое акционерное общество "Инженерный центр "ЭЛЕКТРОЛУЧ" | Светильник светодиодный |
CN108308104B (zh) * | 2018-02-28 | 2020-05-05 | 东莞市闻誉实业有限公司 | 照明装置及鱼缸 |
US10697626B1 (en) * | 2019-01-18 | 2020-06-30 | Signify Holding B.V. | LED luminaire heatsink assembly |
US12092399B2 (en) * | 2020-07-14 | 2024-09-17 | Raytheon Company | Chimney cooler design for rugged maximum free convection heat transfer with minimum footprint |
US11946630B2 (en) * | 2021-03-30 | 2024-04-02 | Chien-Ting Lin | LED lamp heat dissipation structure with outward corrugations and reflector function |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6511209B1 (en) * | 2001-10-02 | 2003-01-28 | Albert C. L. Chiang | Lighting fixture |
NL1028678C2 (nl) | 2005-04-01 | 2006-10-03 | Lemnis Lighting Ip Gmbh | Koellichaam, lamp en werkwijze voor het vervaardigen van een koellichaam. |
US20070279862A1 (en) * | 2006-06-06 | 2007-12-06 | Jia-Hao Li | Heat-Dissipating Structure For Lamp |
CN101680613B (zh) * | 2007-05-23 | 2013-10-16 | 夏普株式会社 | 照明装置 |
CN101424394B (zh) * | 2007-11-02 | 2010-09-08 | 富准精密工业(深圳)有限公司 | 散热装置及其应用的发光二极管灯具 |
TWI324670B (en) * | 2007-11-02 | 2010-05-11 | Foxsemicon Integrated Tech Inc | Light-emitting diode illuminating device |
US7637635B2 (en) * | 2007-11-21 | 2009-12-29 | Fu Zhun Precision Industry (Shen Zhen) Co., Ltd. | LED lamp with a heat sink |
JP4945433B2 (ja) * | 2007-12-28 | 2012-06-06 | シャープ株式会社 | 照明装置 |
CN201184555Y (zh) * | 2007-12-28 | 2009-01-21 | 王鑫超 | 一种多边嵌槽式柱形led灯泡 |
US20090185380A1 (en) | 2008-01-17 | 2009-07-23 | Ho Sung Tao | LED Lamp with Heat Dissipating Configuration |
US20090296387A1 (en) * | 2008-05-27 | 2009-12-03 | Sea Gull Lighting Products, Llc | Led retrofit light engine |
DE202009005266U1 (de) * | 2009-09-10 | 2009-12-03 | Davinci Industrial Inc., Hsinchuang | LED-Lampe mit hoher Wärmeabführleistung und Sicherheit |
-
2009
- 2009-10-30 DE DE102009051334.5A patent/DE102009051334B4/de active Active
-
2010
- 2010-09-23 WO PCT/EP2010/064046 patent/WO2011051058A1/de active Application Filing
- 2010-09-23 US US13/504,804 patent/US9163820B2/en not_active Expired - Fee Related
- 2010-09-23 EP EP10771039.4A patent/EP2494270B1/de not_active Not-in-force
- 2010-09-23 CN CN2010800497368A patent/CN102639935A/zh active Pending
- 2010-10-21 TW TW099135995A patent/TWI567327B/zh not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
TWI567327B (zh) | 2017-01-21 |
US9163820B2 (en) | 2015-10-20 |
US20120218755A1 (en) | 2012-08-30 |
EP2494270B1 (de) | 2019-04-24 |
WO2011051058A1 (de) | 2011-05-05 |
DE102009051334B4 (de) | 2016-12-15 |
CN102639935A (zh) | 2012-08-15 |
TW201128112A (en) | 2011-08-16 |
DE102009051334A1 (de) | 2011-05-05 |
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